Ripbot don't use whole power of CPU

[vivabarca]

Hi. In Ripbot 1.18.1, I use this setting for Rip BD source to 800 MB mkv: High4.1, very slow, film

--level 4.1 --preset veryslow --tune film --aud --nal-hrd vbr --vbv-bufsize 62500 --vbv-maxrate 62500

and windows task manager during encoding is :



and System Feature :


.................................................. ...........
Why Ripbot don't use whole power of CPU ? is there any way to solve this problem ?
Encoding a 800 mb mkv takes 5 hours, is it normal ?

[redwudz]

In a 2 pass encode, pass one doesn't normally use the full CPU resources. But when you run pass two, it should be very close to 100% CPU, at least it is on my PC during an encode.

My settings for a Blu-ray to MKV conversion is a two pass encode, size set to 7900MB, H.264 MKV with AC3 6 channel audio at 640 Kbps. Everything else at default.

My last BD>MKV encode took about 3 hours and that's about average.

[vivabarca]

thanks, does MeGUI use the full CPU resources in both passes ? (pass 1 and 2 )
Which is faster in same setting for encode ? (High4.1, very slow, film)
MeGUI or Ripbot ?

[poisondeathray]

They will be about the same, both will use the same CPU resources.

Certain settings are likely bottlenecking your encode . For example b-adapt 2 isn't very well multithreaded and can be a bottleneck

Hint : --preset veryslow means.... very slow , so if you want it faster, use a faster preset

[hello_hello]

Running two encoding jobs simultaneously tend to keep the CPU pretty busy.

Or sometimes I split an encoding job into halves, encode them at the same time, then append the video with MKVMergeGUI. If you do that, add -stitchable to the x264 command line so you won't have an issue appending the encoded video (assuming the same settings are used each time).